Window-cleaning device



Feb. 24. 1925.

J. M QNCRIEFF wINnow CLEANING DEVICE Filed Dec'. '20, 1923 2 Sheets-Sheet 1 Feb. 24. 1925. 1,52 ?,48` 7 J. MoNcRlEFF WINDOW CLEANING DEVICE Fl'ed'Dec. 20, 1923 2 Sheets-Sheet 2 WWM; w, m paw V64 @ttor/nega Patented Feb. 24, 1925.

`PATENT OFFICIEL.`

donn monomers, or New Yon-K, n. Y.

" WINDOW-CLEANING' 'nnvron Application lledDecember 20,1923. Serial No. 681,867.

To altro/wm t may Concern: f

Be it known `that l, JOHN h/loNonmrr, a citizen of the United States, residing at New York, in the county of New York and .State of New York, have invented certain new and useful lmprovements in Window- Cleaning Devices;` and I- do-declare the fol-- lowing to be a full, clear, and exact description of the invention, such aswill enable others skilled in the .art to which it ap pertains to make and use the same.

My invention relates to improvements in window cleaning devices and its principal object is to provide a simple and inexpensive, yet an efficient and desirable arrangement of parts, whereby both the outer and the inner sides of a window pane may be simultaneously cleaned while the operator of the device stands within the building.

`l/Vith theV foregoing `in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Figurel is a side elevation showing one form of the invention applied to 4a window sash. f

Figures 2 and 3 are vertical sectional views as indicated by lines 2--2 and 33 ofFigl. `f

Figure 4 is a perspective view of one of the cleaning elements.

Figure 5 is a fragment-ary perspective view of a portion of the construction shown in the preceding figures.

Figure 6 is a detail sectional view of the upper belt roller.

Figure 7 is a view similar to Fig. 5, but illustrating a different form of construction.

Figure 8 is a vertical sectional view, similar to Fig. 2, but showing the construction illustrated in Fig. 7.

Figure 9 is a plan view of the upper rollers of Figs. 7 and 8.

In the drawings above briey described. the numerals 1 designate an upper pair of clamps adapted to straddle the upper rail of a window sash, while the numerals 2 designate similar clamps to straddle the lower rail of the sash. Each of the clamps A1 and 2 is preferably of the U-shaped construction shown and its arm portions 3 are preferably pivoted together as indicated at il, to permit them to be moved inwardly and outwardly, and means such as the screw 5 and any desired spring such as 5 are provided for drawing said arms into clamping relation with the sash rail.` In the form of construction shown, the free ends of the arms 3 are flattened as indicated at 6, and said ends of the upper clamps as well as the corresponding ends of the lower clamps, are connected by horizontal rods 7 for disposition at opposite sides of the window pane, to hold certain belting, hereinafter` described, in close relation with said pane.

At. suitablel` locations, otherehorizontal rods 8 may extend between the clamps to hold the belting against dragging upon the upper and lower sash rails.

In the construction shown in Figs. 1 to 5, a rod 9 extends horizontally between the upperclamps 1 and another such rod extends between the lower clamps 2, and flanged rollers 9L are rotatable and slidable on these rods. A suitable belt 10 is trained around the rollers 92L and properly engaged with the rods 7 and 8, so that the two reaches of said belt may be disposed at opposite sides of the window pane. This belt is provided with a suitable buckle or the like 411, whichV permits it to be passed around the window sash and also allows for adjustment. Suitable cleaning elements 12 are connected withthe inner andouter reaches of the belt 10, by appropriate spring clips or the like 13, each of said cleaning elements being preferably formed of a back 14, a pad 15 engageable with said back and having its ends turned around the ends thereof, and a pair of pivoted yokes 16 carried by' the back for engaging the turned 'ends of the pad and securing the latter to the back, this construction being most clearly illustrated in Fig. 4.

lt willf be seen that after properly applying the device to the window sash, the inner reach of the belt 10 may be gripped by hand and moved upwardly and downwardly, as well as laterally, thus simultaneously causing both of the cleaning elements 12 to move over the surface of the window pane. During the cleaning operation, the rollers 9a rotate and slide on the rods 9, according to the manner in which the belt is moved.

ln thc construction shown in Figs. 7, 8 and 9, two rollers 9b are used at top and bottom, mounted on rods 9 and geared together at 17. Two belts 10l carrying cleaning 'elements l2a are engaged with the upper and lower rollers, Linl'rslS eone-cttheihiibsll of the rollers 9b so that these rollers must move together along the rods 9. v 4

In operating the form of :construction just described, the inner belt 10a is operated *y I ""be'ltgu'idiigmeans carried by said clamps merely by moving it upwardly'aifd downwardly and at the same time exerting lateral pressure thereon in onedireetion or the other, and the "outer-belt will fbe similarly moved, due to thexlinks 1.8"andr`gear`s 17.

While I have illustrated lthe fpreferied forms of myinvention, it is to 'be-under- -stood that numerous vchanges nay'be vmade vwithin the scope of `said l'invention `4as claimed.

I claim: Y. Y

1. window cleanerv comprising a p'airpof upper Ushape`d clampsl adapted-tostradd'le the "upper rail 'of 'a "sash, 'a pair; Aof; lower 'U- shaped clampsv adapted to straddfle'tlietlower rail of thesaine 'sa`sh,' upper and lower horizontally elongated belt guiding j lmeans extending `between the upper .clamps fand" between jthe "lower clamps, cleanerecarryfing belting trainedaround. A'said' 'means'and )having reaches for' disposition atopposite `sid'es of 'the sash, and 'horizontal' rodsA extending between the sash-s'tradd'lig"arms :ofj-said clamps for holding the Cleaner-Carrying vreaches of thebelting in'olose' relatibn with the pane'of thesash. v v l 2. Astructure"as'specified in laiml ;to

rgether with additional horizontal rodsA` eX- 'tfending between the arms Iof said clamps to prevent the belting fronldra'gging upon-the upper and lower rails pf the sash. y

` 3. A window cleaner comprising upp'er andl lower clampstada'pt'ed to" grip-"theupper relaiflverly` movable rail-.gripping sections and n'iansefr lfinving said sections inwardly towardleach other, horizontally elongated toextend alongv theledges of the sash, and cleanercarrying"beltinv trained around said belt-guiding meansand having reaches for disposi-tion at opposite-V sides of the sash.

l vA Window f 'cleaner f comprising upper Yand lower velavmps adaptedto gripthev upper yandlower rai-ls of -a Window'sash respective- .lyfupper andlowerfguide rods carriedI by said clampsan'd adapted to entend along the edgesl of the sash, anged' belt-guiding rollers rotatable Aand slidable along said rods,

and cleaner-carrying belting trained around sald rollers and' hav-lng reaches for'disposition-at ioppositesides of the sash.

5.v A window cleaner comprising upper andflo'wer clampsdadaptedfto .grip the `upper andlowerrails'of a Window sash respectivelyfupper and loyver' pairsy of rods' carriedjby saidclamps; flanged belt rollers rotatable andfslidablev along said rods,A links connecting t-h'e rollers of eaolr pair of' rollers for y insuring simultaneoussliding thereo,-`g'earing kconnecti-ing the rollers' of each pair for causing simultaneousrotation thereof, -a-ndaV pair of *belts engaged with Athe p inner and outer rollers respectively,` said belts being Aprovided withl Window cleaning members.

In testimony whereof I have hereuntolafl'fixed Amy signature.

`JOHN"'MONCR1EFF. 

